---
id: WC-STYLE-017
name: 日期格式化年份统一使用小写y
severity: error  # error=阻断, warning=警告
source: J000063
tool: auto  # auto-manual-auto: detected by tool / manual check / AST-grep
category: wc-style
description: |
  日期格式化年份统一使用小写y

  对应浩鲸规范 J000063。

check:
  type: ast-grep  # ast-grep / pmd-custom / spotbugs / checkstyle / manual
  pattern: TODO

notes: "yyyy vs YYYY confusion"